Fawn Lake Weekly Update, September 4, 2020

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Fawn Lake from Springs Road

In spite of a few rain events, the Dredgit crew was able to dredge and haul all week, removing an additional 1,036 cubic yards of lake sediments for a total of 2,686 yards, approximately 33% of the total amount to be cleared.  This material is being sent to the Lexington facility for reuse in their compost operations.  The dredge barge has just about completed the P – P cross-section (see construction drawings, sheet C-6), and will be moving to section O – O in the middle of the lake after Labor Day.

Progress by the weed harvester this week was sporadic due to on-going mechanical issues, but it has now removed 262 cubic yards of vegetation.  The harvesting should be complete by September 11th.  As noted in the project plan, the southwestern portion of the lake is not being cleared. This will maintain the current habitat for species that exist in this type of resource area.

Dredgit’s subcontractor has started to install the steel sheet piles at the Springs Road dam. These 4’ by 10’ panels are being driven through the existing embankment down to bedrock to become the new structural dam.  Once the sheet piles are in place, a temporary flexible dam will be installed to contain the water away from the outlet so that the organic material can be removed and replaced with structural fill.  (This temporary “Portadam” should really confuse the Fawn Lake beavers.)

The trail across the dam is still closed, but the trails on the northeast side of the lake are now open.  The barge cables are near the trails, but please do not cross, touch, or stand on the cables.  Access from Fawn Circle is still open alongside the work site; please use caution walking across the lawn at the end of Sweetwater Avenue.


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